> There are significantly more sales of PS4 than switch

With a 4 year head start, the PS4 has 116.9m, the Switch has 103.5m[1]. Averaged over the years, the PS4 is lagging the Switch by nearly half - 14.6m/y vs 25.9m/y, no?

[1] https://en.wikipedia.org/wiki/List_of_best-selling_game_cons...